The WiFi devices contain program code that runs internally, often referred to as firmware. You can update the firmware via the FilesThruTheAir™ WiFi Sensor Software (v1.30.41 onwards) by clicking on the green 'Advanced Tools' icon and then clicking on the green 'Firmware Updater' icon. You’ll need to connect the device to the PC using the USB cable provided then follow the on-screen instructions to download and update the latest firmware versions. 

To benefit from the latest improvements we recommend using the latest firmware releases for your devices. Depending on the previous firmware version, your device may be in a factory-reset condition following a firmware update, and will need to be connected to the Cloud.  Any existing data for this device on the FilesThruTheAir™ Cloud will be archived for safe-keeping.